From ddacb03e875dd4c1a79421d030da9cdc4f081e6e Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Thu, 1 Feb 2018 10:56:19 +0100 Subject: libbb: commonalize a bit of little-endian CRC32 table generation code function old new delta global_crc32_new_table_le - 11 +11 crc32_new_table_le - 9 +9 inflate_unzip_internal 560 556 -4 flash_eraseall_main 823 819 -4 unpack_xz_stream 2403 2394 -9 lzop_main 121 112 -9 gzip_main 187 178 -9 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 0/5 up/down: 20/-35) Total: -15 bytes Signed-off-by: Denys Vlasenko --- libbb/crc32.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'libbb') diff --git a/libbb/crc32.c b/libbb/crc32.c index b00b580..728bcb7 100644 --- a/libbb/crc32.c +++ b/libbb/crc32.c @@ -41,6 +41,16 @@ uint32_t* FAST_FUNC crc32_filltable(uint32_t *crc_table, int endian) return crc_table - 256; } +/* Common uses: */ +uint32_t* FAST_FUNC crc32_new_table_le(void) +{ + return crc32_filltable(NULL, 0); +} +uint32_t* FAST_FUNC global_crc32_new_table_le(void) +{ + global_crc32_table = crc32_new_table_le(); + return global_crc32_table; +} uint32_t FAST_FUNC crc32_block_endian1(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) { -- cgit v1.1